1. I'll phone you when(if) I come to St. Petersburg.
2. You'll be tired if you don't stop now.
3. I'll stay with the baby if (when) you go to the cinema.
4. We'll ha ve dinner together when you come home.
5. They'll go to the club if they are not busy.
6. We can ski when (if) it snows.
7. You can watch TV if you have time.
8. She'll sing for you if you ask her.
9. We shan't go to the skating rink if it is nasty.
10.It will be warmer when(if) the sun appears from the sky.
Ответ:
1) Good food is healthy for our organism. It keeps you healthy and you rarely get sick. You eat healthy food every day. Good food has a lot of vitamins.
2) You can eat bad food for fun, because if you eat much, you can get sick for a long time. Everybody knows that fast food, sweets, are unhealthy. So you need to eat it in moderation.
Объяснение: